L3Harris Cuts Hypersonic Component Production Time by 90% With 3D Printing

From Weeks to Days: The 3D Printing Revolution in Defense Manufacturing

In a significant breakthrough for additive manufacturing in defense applications, L3Harris Technologies has announced a dramatic 90% reduction in hypersonic propulsion component production time through advanced 3D printing techniques. The achievement comes under a Department of Defense Manufacturing Technology Program contract managed through the Naval Surface Warfare Center Crane.

The work is part of the Growing Additive Manufacturing Maturity for Airbreathing Hypersonics (GAMMA-H) initiative, which focuses on identifying materials, equipment, and processes that enable scalable production of hypersonic propulsion systems.

From Powder to Propulsion

"We start with just powdered metal and quickly produce a complete propulsion system," explained Scott Alexander, President of Missile Propulsion at L3Harris. "The new approach combines multiple steps, simplifying production and lowering costs."

The integrated digital production line leverages large-format 3D printing, robotics, and autonomous machines to reduce reliance on traditional supply chains and extensive post-processing.

The Strategic Context

This development comes amid the Pentagon's investment in L3Harris' rocket motor business announced in January 2026. The government funding aims to expand US-based production capacity for solid rocket motors used across major missile systems, including air and missile defense interceptors and long-range strike weapons.

The GAMMA-H program represents a broader government push to mature domestic additive manufacturing capabilities for critical defense applications, reducing dependence on traditional manufacturing supply chains that have historically limited production rates.

What This Means for the Industry

The 10x production speedup demonstrates that additive manufacturing is maturing beyond prototyping and into full-rate production for high-performance defense components. As hypersonic weapons become increasingly strategic, the ability to rapidly produce propulsion systems could be a significant national security advantage.

For the 3D printing industry, L3Harris' success validates the technology's potential for high-volume manufacturing of mission-critical parts—a market segment that has remained elusive for many additive manufacturing companies.